<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %><%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/5/7
  Time: 15:32
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>用户列表</title>
</head>
<body>
<jsp:include page="header.jsp"/>
<style type="text/css">
    table{
        border-collapse: collapse;
    }
    td{
        border: 1px solid #000;
        padding: 10px;
    }
</style>
<table>
    <tr>
        <td>编号</td>
        <td>用户名</td>
        <td>密码</td>
        <td>操作1</td>
        <td>操作2</td>
    </tr>
    <%
        //脚本,3+1 从数据库查数据
        Connection connection=null;
        Statement statement=null;
        ResultSet resultSet=null;
        String sql="select * from t_users";
        //加动驱动程序
        Class.forName("com.mysql.jdbc.Driver");
        connection= DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
                "root",
                "123456"//密码123456
        );
        statement=connection.createStatement();
        resultSet=statement.executeQuery(sql);

        class User{
            int id;
            String username;
            String password;
        }
        List<User> userList=new ArrayList<User>();
        while (resultSet.next()){
            int id=resultSet.getInt(1);//取数据库的第一列
            String username=resultSet.getString(2);//取数据库的第二列
            String password=resultSet.getString(3);//娶数据库的第三列
            User user =new User();
            user.id =id;
            user.username = username;
            user.password = password;

            userList.add(user);
        }
        resultSet.close();
        statement.close();
        connection.close();

        for (User u:userList){
            out.write("<tr><td>" + u.id+"</td><td>"
                    +u.username+"</td><td>"
                    + u.password+"</td><td>" +
                    "<a href='Userdelete.jsp?id=${user.id}'>删除</a></td><td>"+
                    "<a href='userUpdate.jsp?id=${user.id}&username=${user.username}&password=${user.password}'>更新</a></td></tr>");


        }
    %>
</table>
</body>
</html>
